The +Pool team, which has been developing the project for the last 12 months, just aligned forces with Arup, an independent engineering firm, and is starting to gain momentum and buzz around the city.

The complex would feature a children's pool, a lap pool, a lounge pool, and a sports pool, and would be filled with river water (don't be grossed out -- a three-part filtering system would block out unwanted contaminants.)

The +Pool team is trying to raise $25,000 in donations to begin testing the pool's filtration resources and system; they've already raised over $10,000 and have nearly a month to go.

*An earlier version of this post said the pool would float in the Hudson River; it's actually planned for the East River.